数字传感器信号采样技术研究  

Research of signal sample technique for digital sensor

作　　者：胡平平[1] 王晶杰[1] 

机构地区：[1]北京信息科技大学自动化学院,北京100192

出　　处：《计算机工程与设计》2009年第24期5739-5742,共4页Computer Engineering and Design

基　　金：北京市教委科技发展计划面上基金项目(KM200711232008)

摘　　要：为了提高数字传感器输出信号的采样精度,简化采样处理,提出了一种将脉冲宽度测量和脉冲计数测量相结合的复合采样方法,给出了该方法的基本原理,并依据信号采样理论,推导了该方法的基本计算公式,讨论了它的采样精度、性能和参数选取限制。结合实际应用情况,给出了可以节省处理量的基于整数运算的改进算法和可以使采样精度最大化的动态精度自适应算法。该方法已成功地应用到实际系统中,实测数据表明,该方法有较好的精度和适应性。To improve the sample resolution and to simplify the sample process of digital sensor signal,a new wave form sample method is given,which combines measuring of pulse-width and pulse-count.After describing the basic principle of the new method,its basic computation formula is deduced based on signal sample theory.The sample resolution,performance and parameter selection of the new method is discussed.Improvements and implement are given which can reduce the computation of sample by integer calculation and dynamically maximize the sample resolution.The new method is successfully used in actual sample system and the high resolution and better applicability are verified by experimental data.

关 键 词：数字传感器 采样理论 波形采样 采样精度 算法优化 

分 类 号：TP368[自动化与计算机技术—计算机系统结构]